I repaired a big tear thats lasted so far 6 months with this stuff. I put a layer of this stuff around the tear that was very jaggered. Then put a sheet of bladder material over the whole lot. So far so good.

You might want to consider using Airtime Valve traps - http://www.airtimekite.com/index.php/ai ... -trap.html . They sandwhich the valve shloulder with a thin but very flexible and sticky adhesive foam, making an adhesive bond on both the underside and top-side of the valve shoulder. Nice big diameter and third adhesive layer to make the bond to the bladder. I've been using them for about 6 months thus far, with excellent results.

Airtime claims they are 5 times more durable than standard stick-on valves - they must be doing some sort of accelerated testing on which this claim is based.

those airtime traps are HUGE 4 inches wide. Every one I used I had to trim down in size, so if you have a failed valve you had to cut out with scissors there is a good chance the trap will work. I haven't had a trap fail yet, but you know, I haven't had an original airtime valve fail ever either.

Grrrr..quite difficult to set the airtime or usticks without folding the bladder...I was attempting to re-seat an old ustick and stretched the bladder upon removal....of course I ruined yet another bladder....this will help dramatically...